It isn't bad to stop while running, but it can be a sign of bigger issues with pacing, breathing, and physical and mental training. Stopping while running also makes it hard to see your progress towards your goals and set you up with bad habits for the future.

Is it better to jog without stopping?

Running for 30-minutes without stopping is one of those barriers all runners face one time or another. Once you're able to run for 30-minutes, you'll begin to enjoy running more, you'll see a bigger health benefit to regular running, and you can run further and explore new locations.

Is it OK to stop to walk during run?

It's a common belief that walking during a run prevents running injuries. However there is no evidence to support that idea. Taking several 1 to 2-minute walk breaks during a 30-minute run only reduces the volume of running by a mile or less. That's not significant enough to provide any injury prevention benefit.